This article discusses how one might customize the welcome email for a new mail user.
To customize the welcome email, the corresponding notification template will need to be modified as described in our documentation here: https://docs.cpanel.net/knowledge-base/general-systems-administration/notification-templates/
As mentioned in our documentation, the specific templates which govern that mail notification are as follows:
|Template file||Description||Interface setting|
|Mail/ClientConfig.*.tmpl||Send the mail client configuration file to a new mail user. This notification template uses the
Email Client Configuration
And their full paths are shown below: